Keratoconus and Scleral Lenses

04th August 2020

Patient History A 34-year-old Hispanic female was referred to us by an ophthalmology clinic for a contact lens evaluation. JS was diagnosed with keratoconus when she was 22 years old and claims that the vision worsened each year. She tried multiple pairs of glasses, and then she was finally...

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Overcoming Lens Discomfort and Misting in a Keratoconic Patient

30th April 2025

Patient Lens Design Lens Material Male 44 years Custom Designed Patient History Indication: Keratoconus, Irregular corneas R+L Medical History: • None. No family history of eye disease Ocular History: • Exact time of diagnosis unknown but it was before 1998 • Penetrating graft right eye May 2001 Exam &...

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Conjunctival Scarring Case Report

21st November 2016

Conjunctival Scarring Many conditions can cause the conjunctiva, the thin transparent membrane that covers the white of the eye and the underside of the eyelids, to become scarred. Scarring damages the conjunctiva and prevents it retaining the protective mucous layer, which helps tears adhere to the surface. Patients may...

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Haunted by Ghosting: HOA Correction in Keratoconus

25th March 2021

Scleral lenses have an astounding ability to provide patients with the gift of sight, often allowing them to regain their lives. With keratoconus (KCN) being the most common indication for scleral lenses, patients often experience a significant improvement in visual function with wear.1 It is well-understood that, by providing...

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The Hard Facts on GP Contact Lens Care

29th July 2021

The “Contacts with Conway” series of YouTube videos have been surprisingly well-received by both industry and the public. So much so in fact, that we regularly receive requests to explain or expand upon particular topics and, where possible, we use this feedback when deciding future episodes. One such request...

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Type 1 Lattice Corneal Dystrophy Status Post Penetrating Keratoplasty: A Scleral Lens Success Story

31st August 2023

Background Type 1 lattice corneal dystrophy (LCD1) is a rare hereditary bilateral disorder of the cornea. This is a result of an autosomal dominant mutation of the TGFBI (transforming growth factor beta induced) gene which leads to accumulation of amyloid deposits in stroma1 Variable clinical appearance depends on the...

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Slit Lamp Series – Oblate Cornea

02nd April 2024

In the second instalment of the Slit Lamp Leries, Martin Conway looks at Oblate Cornea. You can read the previous article which examined Demodex Mites here. This month’s image from Marco Tovaglia won the BCLA Diane Gould Photo Contest in 2021. It very clearly illustrates the flattening of the...

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Avoiding a Corneal Transplant in a Young Patient

23rd June 2023

Background Corneal opacity is the fifth leading cause of blindness worldwide¹. A common cause of corneal opacity is infectious keratitis. In developed countries, contact lenses are the leading cause of infectious keratitis while in developing countries it is from corneal trauma during agriculture work¹. The most common organism responsible...

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Tackling a 10-mm Pupil with Post-LASIK Glare

30th May 2024

I have no idea what LASIK (laser eye surgery) surgeons are thinking when they perform surgery on engineers with large pupils, let alone engineers with 10-mm pupils when dark adapted (Figure 1). Figure 1. 10-mm dark adapted pupil. Such an engineer sought out our office for a scleral fitting...

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The Other Side of Myopia: A Wicked Health Problem

31st August 2023

Over the years, we have come to know a lot more about myopia, its aetiology and the sight-threatening conditions high myopia is associated with. Research has shown multiple effective treatment programs, visual environmental interventions, and optical and pharmacological treatments to prevent the progression of myopia, all of which aim...

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