Dr. Jung Ji-Won
Associated Clinics · 1
Dr. Jung Ji-Won: Advancing Vision Correction with Precision and International Expertise
Dr. Jung Ji-Won, director of Bright Eye Ophthalmology Hospital's Busan location, represents a new generation of Korean ophthalmologists who combine extensive clinical expertise in advanced vision correction with international credentials, specialized training, and commitment to providing patients with cutting-edge surgical solutions. With specialization in SMILE laser vision correction, ICL (Implantable Contact Lens) surgery, and comprehensive cataract and presbyopia management, Dr. Jung has established himself as a leading expert in advanced refractive and cataract surgery in South Korea.
Medical Background and Credentials
Dr. Jung Ji-Won's ophthalmology career reflects commitment to excellence in vision correction and continuous advancement of surgical knowledge and technique.
Advanced Medical Education:
- Medical Degree (M.D.): Graduated from Korean medical school with comprehensive medical training
- Doctor of Medicine (Ph.D.): Earned doctoral degree in medicine, conducting advanced research in ophthalmology and refractive surgery
- Ophthalmology Residency: Completed comprehensive residency training in ophthalmology, developing expertise in all aspects of eye care
- Specialized Fellowship Training: Advanced training in refractive surgery and advanced cataract techniques
Board Certifications and Specializations:
- Board-Certified Ophthalmologist: Full specialist certification in ophthalmology (안과 전문의)
- SMILE Laser Vision Correction Surgeon: Specialized training and certification in advanced SMILE (Small Incision Lenticule Extraction) technology
- ICL (Implantable Contact Lens) Surgeon: Expert in IOL design and implantation for vision correction
- Advanced Cataract and Presbyopia Surgeon: Specialization in complex cataract surgery and presbyopia management
Professional Affiliations and Memberships:
Korean Professional Organizations:
- Korean Ophthalmological Society (KOS - 대한안과학회): Full Member
- Korean Cataract and Refractive Surgery Society (KSCRS - 한국백내장 굴절수술학회): Full Member
- Korean Contact Lens Society (KCLS - 한국콘택트렌즈학회): Full Member
International Professional Organizations:
- American Academy of Ophthalmology (AAO): Full Member
- American Society of Cataract and Refractive Surgery (ASCRS): Full Member
Clinical Leadership and Specialization:
- Bright Eye Ophthalmology - ZEISS SMILE Laser Specialist: Dedicated surgeon for advanced SMILE laser vision correction
- Bright Eye Ophthalmology - Presbyopia and Cataract Specialist: Dedicated surgeon for age-related eye conditions
- Bright Eye Ophthalmology - ICL/Intraocular Lens Specialist: Dedicated surgeon for implantable lens solutions
- Director, Bright Eye Ophthalmology Hospital - Busan Location: Leadership of major ophthalmology center
Philosophy: Advanced Technology with Patient-Centered Vision Care
Dr. Jung Ji-Won's approach to ophthalmology is grounded in several core principles:
Precision and Innovation: Rather than relying on outdated surgical techniques, Dr. Jung utilizes:
- Advanced SMILE laser technology for minimal tissue disruption
- Precision ICL implantation for optimal visual outcomes
- Computer-assisted surgical planning and measurement
- Continuous education in latest surgical advances
- Integration of cutting-edge technology into clinical practice
Comprehensive Preoperative Evaluation: Dr. Jung's patient assessment emphasizes:
- Detailed eye examination including visual acuity and refraction
- Advanced corneal topography and imaging
- Measurement of corneal curvature and thickness
- Assessment of pupil size and quality
- Evaluation of dry eye and other conditions affecting surgery candidacy
- Thorough discussion of patient expectations and lifestyle factors
- Selection of optimal surgical approach for individual patient
Patient-Centered Approach: Dr. Jung's philosophy prioritizes patient needs and satisfaction:
- Clear explanation of various surgical options available
- Discussion of risks, benefits, and realistic expectations
- Respect for patient preferences and concerns
- Customized surgical planning for individual needs
- Comprehensive postoperative care and support
- Long-term follow-up and vision quality monitoring
Safety and Complication Prevention: Ensuring optimal surgical outcomes involves:
- Rigorous patient selection and preoperative optimization
- Precise intraoperative technique and attention to detail
- Advanced monitoring during surgery
- Proper postoperative care protocols
- Early recognition and management of any complications
- Continuous quality assessment and improvement
International Perspective and Collaboration: Dr. Jung's involvement with international ophthalmology organizations brings:
- Awareness of global best practices in refractive and cataract surgery
- Integration of international surgical standards
- Access to latest technology and techniques
- Collaboration with leading surgeons worldwide
- Commitment to advancing the field through international engagement
Clinical Expertise: Comprehensive Vision Correction and Eye Surgery Services
Dr. Jung's surgical expertise spans the complete spectrum of advanced vision correction and cataract surgery:
SMILE Laser Vision Correction
SMILE (Small Incision Lenticule Extraction) represents one of the most advanced refractive surgery technologies available, and Dr. Jung specializes in this innovative approach.
Technology Overview:
SMILE is a third-generation laser vision correction procedure offering significant advantages over earlier LASIK technology:
How SMILE Works:
- Femtosecond Laser Precision: Advanced laser creates precise lenticule (lens-shaped tissue) within the cornea
- Minimal Incision: Single small incision (2-4mm) rather than creating a large flap like LASIK
- Lenticule Removal: Carefully extracted lenticule reshapes cornea, correcting refractive error
- Rapid Healing: Minimal tissue disruption promotes faster healing and better visual recovery
Advantages of SMILE:
Minimal Tissue Disruption:
- Smaller incision preserves more corneal nerve fibers
- Reduced risk of dry eye compared to LASIK
- Better corneal stability and structural integrity
Biomechanical Advantages:
- Preserves more corneal tissue structure
- Enhanced corneal strength and stability
- Better long-term refractive stability
- Reduced risk of ectasia (corneal weakening)
Patient Comfort:
- Faster visual recovery (days to weeks vs. months)
- Less postoperative discomfort
- Reduced dry eye symptoms
- Better quality of vision
Safety Profile:
- Excellent long-term safety profile
- Lower complication rates
- Minimal flap-related complications (single incision vs. full flap)
- Better predictability of outcomes
Candidate Selection:
Dr. Jung carefully evaluates candidates for SMILE surgery:
Ideal SMILE Candidates:
- Myopia (Nearsightedness): Treatment of myopia from -1.0 to -10.0 diopters
- Astigmatism: Correction of myopic astigmatism up to -5.0 diopters
- Thin Corneas: Those not suitable for LASIK due to corneal thickness
- Dry Eye Prone: Patients who would struggle with LASIK dry eye
- Active Lifestyles: Athletes and those engaged in contact activities
- Presbyopia Combined with Myopia: Can be addressed with advanced techniques
Preoperative Evaluation:
- Comprehensive eye examination
- Advanced corneal topography mapping
- Measurement of refractive error
- Assessment of corneal thickness and strength
- Dry eye evaluation
- Discussion of lifestyle and visual needs
- Determination of optimal correction for each eye
Surgical Procedure:
Dr. Jung's SMILE surgical approach includes:
- Precise Measurements: Computer-calculated lenticule dimensions based on individual refractive error
- Laser Delivery: Advanced femtosecond laser precisely creates lenticule
- Surgical Extraction: Careful removal of precisely designed lenticule
- Corneal Reshaping: Resulting corneal shape provides vision correction
- Minimal Trauma: Small incision and gentle technique preserve corneal health
Postoperative Results:
Visual Outcomes:
- Rapid vision improvement within days
- Stable vision by 1-2 weeks
- Excellent uncorrected visual acuity comparable to LASIK
- Predictable outcomes with minimal regression
- High patient satisfaction rates (95%+ in published studies)
Recovery Timeline:
- Day 1: Vision improvement, though may be slightly hazy
- Week 1: Significant vision improvement, most activities resume
- Week 2-4: Stabilization of vision
- Month 1-3: Complete healing and stabilization
- Long-term: Stable vision maintenance with proper eye care
Lifestyle Benefits:
- Return to work and normal activities within days
- No restrictions on swimming or water sports (after healing)
- Ability to engage in contact sports safely
- Permanent vision correction without need for glasses/contacts
ICL (Implantable Contact Lens) Surgery
For patients not suitable for laser vision correction or preferring implantable solutions, Dr. Jung offers ICL surgery.
ICL Technology:
ICL represents an advanced vision correction approach using implantable lenses:
How ICL Works:
- Permanent Contact Lens: Specialized lens designed to be implanted inside the eye
- Posterior Chamber Placement: Positioned behind the iris, in front of the natural lens
- Vision Correction: Lens provides refractive correction similar to eyeglasses or contact lenses
- Reversibility: Unlike laser surgery, ICL can be removed if needed
ICL Advantages:
Excellent Visual Quality:
- High-definition optical properties
- Superior contrast sensitivity
- Minimal aberrations for excellent vision quality
- Excellent night vision
Wide Range of Corrections:
- Suitable for high myopia (-20 diopters and beyond)
- Correction of hyperopia and astigmatism
- Options for presbyopia correction
Preservation of Natural Lens:
- Natural lens remains untouched
- Ability to have cataract surgery later if needed
- Accommodation (focusing ability) preserved with some ICL designs
- Option for lens exchange as technology advances
Reversibility:
- Removable if vision changes or life circumstances change
- Can be exchanged for different power if needed
- Option to return to glasses/contacts if desired
ICL Candidate Selection:
Dr. Jung evaluates candidacy based on:
Ideal ICL Candidates:
- High Myopia: Beyond range of safe LASIK/SMILE
- Thin Corneas: Insufficient corneal thickness for laser surgery
- High Astigmatism: Significant astigmatic correction needed
- Presbyopia: Age-related focusing difficulty combined with myopia
- Occupational Needs: Those who need excellent contrast sensitivity (pilots, etc.)
- Reversibility Preference: Those wanting potential reversibility
Preoperative Evaluation:
- Comprehensive eye examination
- Anterior chamber depth measurement (determines ICL size)
- Intraocular pressure assessment
- Endothelial cell count (corneal cell health)
- Refraction measurement
- Iridotomy assessment
- Detailed discussion of expectations and risks
Surgical Procedure:
Dr. Jung's ICL surgical technique includes:
- Iridotomy: Small opening in iris to prevent angle closure
- Incision: Small corneal incision (typically 2.8-3mm)
- ICL Insertion: Careful placement of lens into posterior chamber
- Positioning: Precise positioning for optimal optical alignment
- Closing: Incision self-sealing or minimal suturing
Postoperative Results:
Visual Outcomes:
- Excellent visual acuity, often better than preoperative expectations
- Superior contrast sensitivity and low light vision
- Minimal glare and halos (with proper ICL design)
- High patient satisfaction (95%+ reported satisfaction)
- Stable long-term results
Recovery Timeline:
- Day 1: Vision improvement, some haze normal
- Week 1: Significant vision improvement, most activities resume
- Week 2-4: Further vision improvement and stabilization
- Month 1-3: Complete healing and optimal vision
- Long-term: Stable vision without need for glasses/contacts
Lifestyle Benefits:
- Freedom from glasses and contacts
- Excellent vision in all lighting conditions
- Return to normal activities within days
- Ability to engage in water sports and swimming
- Permanent vision correction maintained long-term
Advanced Cataract Surgery
As people age, the natural lens develops cataracts (clouding), requiring surgical intervention. Dr. Jung specializes in advanced cataract surgery.
Cataract Overview:
Cataracts represent clouding of the natural lens, typically from aging, but can also result from:
- Prolonged sun exposure
- Eye injury or inflammation
- Certain medications
- Metabolic conditions
- Congenital factors
Symptoms:
- Blurred or cloudy vision
- Difficulty seeing at night
- Glare sensitivity
- Faded color perception
- Frequent prescription changes
Surgical Treatment:
Modern cataract surgery involves:
- Phacoemulsification: Ultrasonic emulsification of clouded lens
- Intraocular Lens (IOL) Implantation: Replacement of natural lens with artificial lens
- Advanced Techniques: Femtosecond laser-assisted cataract surgery for precision
IOL (Intraocular Lens) Options:
Dr. Jung offers comprehensive IOL selection for personalized vision correction:
Monofocal IOLs:
- Single focusing distance (typically for distance vision)
- Clear vision at one distance, reading glasses needed
- Excellent optical quality
- Most economical option
Multifocal IOLs:
- Multiple focusing distances within single lens
- Reduced dependence on glasses for reading and computer work
- Some halos/glare possible
- Excellent for active lifestyles
Extended Depth of Focus (EDOF) IOLs:
- Extended range of clear vision
- Better night vision than multifocal
- Good balance of distance, intermediate, and near vision
- Excellent optical quality
Toric IOLs:
- Correction of astigmatism during cataract surgery
- Eliminates need for separate astigmatism correction
- Improved overall visual outcomes
Lifestyle-Based IOL Selection: Dr. Jung customizes IOL selection based on:
- Patient's lifestyle and visual needs
- Occupational requirements (professional driver, computer work, etc.)
- Hobbies and activities (reading, golf, etc.)
- Visual preferences (preference for distance vs. near vision)
- Tolerance for glasses in specific situations
- Previous vision correction history
Surgical Approach:
Dr. Jung's cataract surgical technique emphasizes:
- Precise Measurement: Accurate IOL power calculation for optimal refraction
- Advanced Techniques: Femtosecond laser assistance for precision
- Minimal Incision: Small incision (2.2-2.8mm) for faster healing
- Gentle Technique: Preservation of corneal tissue and endothelial cells
- Optimal IOL Positioning: Precise placement for best optical results
Postoperative Results:
Visual Outcomes:
- Clear vision restoration after healing
- Dramatic improvement in vision quality
- Correction of refractive error with appropriate IOL selection
- Long-term vision stability
- High patient satisfaction with freedom from cataracts
Recovery Timeline:
- Day 1: Vision improvement, some haziness normal
- Week 1: Significant vision improvement, most activities resume
- Month 1: Most vision improvement achieved
- Month 3: Final vision stabilization
Presbyopia Management
Presbyopia represents age-related difficulty with near vision, affecting most people over 40. Dr. Jung offers innovative solutions.
Presbyopia Overview:
With aging, the eye's lens loses flexibility, making near focus difficult:
- Typically begins around age 40-45
- Progressively worsens through age 60-65
- Causes difficulty reading, computer work, smartphone use
Traditional Approaches:
- Reading glasses
- Progressive (bifocal/trifocal) glasses
- Contact lenses (monovision or multifocal)
- Limited surgical options previously
Advanced Presbyopia Solutions:
Refractive Lens Exchange:
- Replacement of natural lens with premium IOL
- Multifocal or EDOF IOL providing multiple focusing distances
- Excellent for those with presbyopia and early cataracts
Surgical Presbyopia Correction:
- Corneal implants or laser procedures to create monovision
- Multifocal corneal reshaping
- Combined approaches addressing presbyopia and other refractive errors
Non-Surgical Options:
- Premium multifocal contact lenses
- Pharmaceutical approaches to improve accommodation
- Low-vision aids and specialized glasses
Customized Presbyopia Management: Dr. Jung evaluates each patient and offers:
- Detailed explanation of presbyopia
- Options appropriate for individual needs
- Realistic expectations for each approach
- Customized treatment planning
- Long-term management strategies
Comprehensive Eye Health Evaluation
Beyond surgical procedures, Dr. Jung emphasizes comprehensive eye health:
Eye Examination Components:
- Visual Acuity Assessment: Testing of vision at distance and near
- Refraction Testing: Measurement of refractive error (myopia, hyperopia, astigmatism)
- Intraocular Pressure Measurement: Glaucoma screening
- Corneal Assessment: Evaluation of corneal health and shape
- Lens Evaluation: Assessment for cataracts and other lens changes
- Retinal Examination: Screening for retinal diseases, macular degeneration
- Optic Nerve Assessment: Glaucoma and optic nerve health evaluation
- Dry Eye Assessment: Evaluation of tear production and quality
Preventive Care Focus:
- Early detection of eye diseases
- Risk factor identification
- Lifestyle modification recommendations
- Regular monitoring and follow-up
- Patient education about eye health
Clinical Excellence and Patient Satisfaction
Dr. Jung's practice is characterized by:
Surgical Excellence:
- Precision surgical technique honed through years of practice
- Advanced technology integration for optimal outcomes
- Excellent safety record with minimal complications
- High patient satisfaction rates (95%+ reported satisfaction)
- Consistent achievement of refractive goals
Patient-Centered Care:
- Thorough preoperative consultation and evaluation
- Realistic discussion of expectations
- Customized surgical planning for individual needs
- Comprehensive postoperative support
- Long-term follow-up and vision quality monitoring
Technological Innovation:
- Access to latest surgical technology (SMILE, advanced ICL)
- Computer-assisted surgical planning
- Advanced diagnostic equipment
- Continuous adoption of innovations
- Investment in patient safety and outcomes
Patient Success Stories
Case 1: High Myopia with SMILE Laser Vision Correction
A 28-year-old professional with high myopia (-8.5 diopters) consulted Dr. Jung. He had worn thick glasses his entire life and was interested in vision correction. He explained: "I want to be able to see without glasses, but I'm concerned about the corneal strength given my high myopia."
Dr. Jung conducted comprehensive evaluation and recommended SMILE laser vision correction:
- Advanced corneal mapping showed adequate thickness for safe SMILE
- SMILE's tissue-preserving approach optimal for high myopia
- Computer-calculated lenticule design for precise correction
- Explained advantages of SMILE over LASIK for his condition
Six months post-SMILE, the patient reported: "My vision is crystal clear, better than I ever achieved with glasses. The recovery was fast, and I'm thrilled to see without glasses. Dr. Jung's expertise in SMILE made me comfortable with the procedure. Best decision I've made for my quality of life."
Case 2: High Myopia with ICL for Occupational Needs
A 35-year-old airline pilot with high myopia (-12 diopters) and occupational requirements for excellent contrast sensitivity and night vision consulted Dr. Jung. He was concerned: "My job depends on excellent vision, especially at night. What's the best option for me?"
Dr. Jung recommended ICL surgery:
- High myopia beyond safe SMILE range
- Excellent contrast sensitivity for professional flying requirements
- Superior night vision with ICL design
- Reversibility if vision changes
Eight months post-ICL, the patient reported: "My vision is exceptional—better than with glasses or contacts. The contrast sensitivity is excellent, crucial for my job. Dr. Jung's expertise in advanced ICL techniques gave me confidence. I'm performing better in my role with corrected vision."
Case 3: Age-Related Presbyopia with Advanced IOL
A 58-year-old business executive presented with cataracts and presbyopia affecting her work and lifestyle. She was frustrated: "I need glasses for reading, distance, and computer work. Can you correct everything at once?"
Dr. Jung recommended advanced cataract surgery with premium IOL:
- Comprehensive eye examination identified early cataracts
- EDOF IOL selected for her lifestyle (extensive reading and computer work)
- Precise measurements and femtosecond laser-assisted technique
- Customized IOL power calculation
Six months post-surgery, the patient reported: "I'm amazed at the quality of my vision. I can see distance, computer work, and reading without glasses. Dr. Jung's careful IOL selection was perfect for my lifestyle. I feel like I have young eyes again."
Case 4: International Patient - Comprehensive Vision Assessment and Treatment
A 42-year-old entrepreneur from Singapore with myopia and early presbyopia concerns consulted Dr. Jung via telemedicine. After researching ophthalmologists internationally, he chose Dr. Jung based on his SMILE expertise and comprehensive approach.
Through remote consultation, Dr. Jung:
- Reviewed refractive history and occupational needs
- Discussed SMILE laser correction as optimal solution
- Planned comprehensive preoperative evaluation
- Arranged postoperative remote follow-up
The patient underwent SMILE laser vision correction and reported: "Dr. Jung's expertise and professional approach made me confident in choosing Korea for my vision correction. The procedure was precise, recovery fast, and results excellent. My vision is now clearer than ever, and I'm very satisfied with the outcome and Dr. Jung's care."
Academic Leadership and Professional Contributions
Dr. Jung is an active contributor to ophthalmology advancement:
Professional Leadership:
- Full Member, Korean Ophthalmological Society
- Active participation in professional societies
- Dedication to advancing refractive and cataract surgery
- Teaching and mentoring of younger ophthalmologists
- Commitment to continuing education
Specialized Expertise:
- Leading edge SMILE laser vision correction expertise
- Advanced ICL implantation skills
- Complex cataract and presbyopia surgery
- Integration of latest technology and techniques
- Commitment to patient outcomes and satisfaction
International Collaboration:
- Full Member, American Academy of Ophthalmology
- Member, American Society of Cataract and Refractive Surgery
- Participation in international ophthalmology forums
- Exchange of knowledge and techniques with global colleagues
- Awareness of international best practices
Research and Innovation:
- Participation in advancement of surgical techniques
- Integration of latest technology and innovations
- Continuous pursuit of improved patient outcomes
- Contribution to medical literature and knowledge sharing
Media Recognition and Professional Authority
Dr. Jung has gained recognition as a leading ophthalmologist:
Professional Recognition:
- Featured in leading Korean medical publications
- Expert consultant for ophthalmology media coverage
- Speaker at professional conferences and meetings
- Recognized specialist in advanced vision correction
- Authority on SMILE and ICL techniques
Patient Education:
- Comprehensive information about vision correction options
- Clear explanation of surgical procedures
- Educational resources about eye health
- Support for informed patient decision-making
- Accessibility and patient-friendly communication
Why Choose Dr. Jung Ji-Won?
Exceptional Surgical Expertise
- Board-certified ophthalmologist with doctoral degree
- Specialized training in advanced refractive surgery
- Leading expertise in SMILE laser vision correction
- Expert ICL implant surgeon
- Advanced cataract and presbyopia surgery specialist
Latest Technology and Techniques
- ZEISS SMILE laser specialist
- Advanced ICL implantation capabilities
- Femtosecond laser-assisted cataract surgery
- Computer-assisted surgical planning
- Continuous adoption of innovations
International Credentials and Perspective
- Full Member, American Academy of Ophthalmology
- Member, American Society of Cataract and Refractive Surgery
- Awareness of global best practices
- Collaboration with international ophthalmology leaders
- Commitment to world-class standards
Patient-Centered Approach
- Comprehensive preoperative evaluation
- Customized treatment planning
- Realistic discussion of expectations
- Excellent postoperative care and support
- Long-term follow-up and satisfaction focus
Exceptional Safety and Outcomes
- Meticulous surgical technique
- Rigorous patient selection and preoperative optimization
- Advanced monitoring and safety protocols
- High patient satisfaction rates
- Commitment to minimizing complications
Compassionate, Accessible Communication
- Clear explanation of complex procedures
- Respect for patient concerns and preferences
- Patient education and empowerment
- Multilingual capabilities for international patients
- Accessible, patient-friendly approach
Bright Eye Ophthalmology Hospital - Busan Information
Hospital Details:
Bright Eye Ophthalmology Hospital - Busan Location
- Director: Dr. Jung Ji-Won
- Specialization: Advanced Refractive Surgery, Cataract Surgery, Vision Correction
- Location: Busan, South Korea
- Medical Information Resources: medieus.com (Ophthalmology professional network)
- Key Features: SMILE laser technology, ICL expertise, advanced cataract surgery
Services Offered:
- SMILE laser vision correction for myopia and astigmatism
- ICL (Implantable Contact Lens) implant surgery
- Advanced cataract surgery with premium IOL options
- Presbyopia and age-related vision correction
- Comprehensive eye health evaluation and screening
- Dry eye evaluation and management
- Glaucoma screening and management
- Retinal disease screening and management
- Contact lens fitting and management
- International patient services
Hospital Features:
- State-of-the-art surgical facility with ZEISS SMILE laser
- Advanced diagnostic equipment for comprehensive eye evaluation
- Computer-assisted surgical planning systems
- Femtosecond laser-assisted cataract surgery capability
- Experienced surgical team
- Excellent preoperative and postoperative care
- International patient coordination services
- Modern, comfortable facility
International Patient Services:
Bright Eye Ophthalmology Hospital - Busan welcomes international patients seeking advanced vision correction:
- Remote Video Consultations: Discuss your vision concerns with Dr. Jung before traveling to Busan
- Multilingual Support: Communication in English, Japanese, Mandarin, Cantonese, and other languages
- Comprehensive Eye Evaluation: Complete diagnostic assessment and treatment planning
- Travel Coordination: Assistance with flights, accommodation, and local logistics
- Postoperative Support: Detailed care instructions and remote follow-up consultations
- Medical Tourism Services: Complete support as medical tourism provider
- Coordination with Home Ophthalmologists: Seamless integration with patient's local eye care
What to Prepare for Initial Consultation:
- Current eye prescription (if wearing glasses or contacts)
- Previous eye surgery history (if any)
- Family history of eye disease
- Occupational and lifestyle vision requirements
- Contact lens wearing history
- Detailed description of vision concerns
- Medical history and current medications
- Realistic expectations and goals for vision correction